Athundercloud has an electric charge of 43.2 c near the top of the cloud and -38.7 c near the bottom cloud. the magnitude of the electric force between these two charges is 3.95 x 10^6 n. what is the average seperation between these charges?

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?